Comb



FIG. 1 is a top plan view of a comb showing my new design;

FIG. 2 is a front elevational view of the comb;

FIG. 3 is an end elevational view, taken from the left end of FIG. 2;

FIG. 4 is an end elevational view, taken from the right end of FIG. 2, and

FIG. 5 is a bottom view, taken from FIG. 2. 

The ornamental design for a comb, as shown and described. 